By sheer happenstance watched this video just prior to visiting this forum. I couldn't agree more with Danny, completely correlates with my experience modding speakers. As for those who don't believe different parts of same value cannot sound different, some years ago I made a simple change of capacitors (same value) in some OEM speakers, got in contact with designer/manufacturer, he incorporated this mod. Not only did he hear the difference, so did literally hundreds of owners of these speakers who incorporated the same mod in their speakers and/or heard the difference in the two tiers of speakers offered by OEM, one with the prior caps, one with the new caps.
As @hilde45 and Danny stated, there is a synergistic relationship between the objective and the subjective as it pertains to loudspeakers and audio in general.